No. 483] STUDIES OF THE OPJl lOGLOSSACE.E 159 



material collected in Sarawak in Borneo. When the writer was 

 in Singapore inquiries were made at the botanical gardens as 

 to the possibility of obtaining material of this spe( i(>s, but it was 

 found that the original locality was lost, and the plant liail not 

 apparently been collected since it was first sent to 1 looker'. 



The writer, however, found that tliis species had been collected 

 near Buitenzorg by Mr. J. J. Sinitli, of the herbarium of the gar- 

 den there. He was kind cnouiili lo accompany the writer to the 

 place where it had been (olleei(>d, and it was thus po.ssible to 

 obtain a fair anioinit of material uliieli was (>nough to show that 

 the plant is certainly quite distinct I'roni (). juudulion . of which 

 it has been supposed (Bitter, loe. eit., \). lb!)) that it was a mere 

 form, ])erhaps due to its terrestrial habit. In Hnitenzorg it grew 

 in a j)lantati()n of bamboo u.sually in the accumulation of 

 huinus and earth about the roots of the clumps of bamboo. It 

 is a small plant (see Fig. 4) and in its still' ti])right habit and nnich 

 longer peduncle presents a very diU'erent appearance from any 

 form of O. pendulum — althoniiii it is evident that it !>elon-^ lo 



tuberous body a])parenlly deveioix'd a^ a root bud ■ Vv^. I, W. \\) 



it approaches O. .r, u itli which it nun be pretiN .•k.^ely allied. 



It <litrers. h<.w,>ver. in other respects than that <.f it. habit, from 

 O. pcinltihtiii The spores i !• ig. 17. !> ) are d(>cidt'dly smaller 

 than those of (). pnidnhim, aii<l the delicate reticulate markings 

 of the epispore (Fig. 17, K) are very ditlVrent from the markings 

 in the latter species. 



